Internet of Things technology has become an increasingly intense discussion. The manufacturer wants a wide variety of common household electronic devices can also be connected to the Internet, and will be integrated with each other with ease.
However, efforts to realize these hopes still encountered a major obstacle, namely energy consumption factor devices that generally tend wasteful if required to remain connected to the Internet.
To answer these problems, a company microcontroller manufacturers Atmel, of San Jose is working to develop an energy-efficient chips that can last for more than 10 years, only a single charge! The chip is SAM L21; a 32-bit microcontroller based on ARM technology. This chip only needs the support of energy less than 35 microamps per MHz when active, and only requires an energy of 200 nanoamps per MHz when in a non-active state.
Atmel artificial technology requires some special tricks to be realized: typically, a chip when in sleep mode must turn off the clock and eventually had to return woken up so that the connected devices can perform the function of communication.
Atmel solutions to overcome this problem is to introduce a number of phases in sleep mode, so each connected device will still be able to communicate with each other when in sleep mode, and this is done without having to consume battery energy in large quantities.
For a while, the chip with long-lasting battery life is not to have high processing capability; Atmel chips made still rely on a processor core Cortex MO + 42MHz, 236kb Flash memory, 32KB Static RAM, as well as a separate static RAM which lower energy consumption level again but with a maximum capacity of 8KB only.
The specification is clearly far from the minimum requirement to operate the device with OS desktop category, but it is sufficient to run small programs such as the display interface of a power type of hardware device, the ability to read and record data for the sensor, or write a tweet.